Skip to content

PROUDLY AUSTRALIAN OWNED AND MADE

FREE SHIPPING OVER $250

HOME OF DIESEL WATER WATCH

  • WATER WATCH
  • FUEL ADDITIVE
  • DIESEL FILL
  • SHOP
    • WATER WATCH
      • WATER WATCH KIT
      • ALL WATER WATCH PRODUCTS
    • DIESEL FILL
      • DIESEL FILL - MISFUELING PREVENTION DEVICE
      • ALL DIESEL FILL PRODUCTS
    • RESPONSIVE FUEL ADDITIVE LUBRICANT & CONDITIONER TREATMENT
  • NEAREST DISTRIBUTOR
  • GET IN TOUCH
  • INSTRUCTIONS
  • FAQ
Log in
  • Facebook
  • Instagram
  • YouTube

Responsive Engineering Australia

  • WATER WATCH
  • FUEL ADDITIVE
  • DIESEL FILL
  • SHOP
    • WATER WATCH
      • WATER WATCH KIT
      • ALL WATER WATCH PRODUCTS
    • DIESEL FILL
      • DIESEL FILL - MISFUELING PREVENTION DEVICE
      • ALL DIESEL FILL PRODUCTS
    • RESPONSIVE FUEL ADDITIVE LUBRICANT & CONDITIONER TREATMENT
  • NEAREST DISTRIBUTOR
  • GET IN TOUCH
  • INSTRUCTIONS
  • FAQ
Log in Cart

Item added to your cart

View cart
Responsive Engineering Australia Diesel Water Watch

WATER WATCH

FIND OUT MORE
Responsive Engineering Australia Fuel Additive

RESPONSIVE FUEL ADDITIVE

FIND OUT MORE
Responsive Engineering Australia Diesel Fill Misfuelling Device

DIESEL FILL

FIND OUT MORE

EXPLORE OUR BEST SELLERS

  • Responsive Engineering Australia Diesel Water Watch WW20072

    WATER WATCH KIT

    WATER WATCH KIT

    Regular price From $499.00 AUD
    Regular price Sale price From $499.00 AUD
    Unit price /  per 
  • Responsive Engineering Australia Fuel Additive Double Bottle

    RESPONSIVE FUEL ADDITIVE LUBRICANT & CONDITIONER TREATMENT

    RESPONSIVE FUEL ADDITIVE LUBRICANT & CONDITIONER TREATMENT

    Regular price $39.50 AUD
    Regular price Sale price $39.50 AUD
    Unit price /  per 
  • Responsive Engineering Australia Diesel Fill.

    DIESEL FILL - MISFUELLING PREVENTION DEVICE

    DIESEL FILL - MISFUELLING PREVENTION DEVICE

    Regular price $99.00 AUD
    Regular price Sale price $99.00 AUD
    Unit price /  per 
1 / of 3

SHOP OUR TOP CATEGORIES

  • DIESEL WATER WATCH

    DIESEL WATER WATCH

    Invented, engineer, and manufactured in Australia, Water Watch is a cutting-edge water...

    DIESEL WATER WATCH

  • DIESEL FILL

    DIESEL FILL

    Incorrect fuelling has become a growing issue, doubling in the last decade....

    DIESEL FILL

  • FUEL ADDITIVE

    FUEL ADDITIVE

    Australian diesel fuel has very low sulphur content to meet emissions standards,...

    FUEL ADDITIVE

  • NEW PRODUCTS COMING SOON

    Stay tuned for the launch of our latest products. We’re working hard...

    NEW PRODUCTS COMING SOON

    Stay tuned for the launch of our latest products. We’re working hard...

1 / of 4

Let customers speak for us

from 50 reviews
Diesel fill cap MUST HAVE ITEM

I purchased a diesel fill cap 5 years ago after filling a Subaru Forester diesel with a full tank of petrol. Almost $1000 wasted. This product is inexpensive insurance to stop you inserting a thinner petrol pump nozzle. It's happened to other people I know too. MUST HAVE ITEM if you own a diesel. Video on my ecopenny YouTube channel.

ecopenny
05/18/2025
DIESEL FILL - MISFUELLING PREVENTION DEVICE
DIESEL FILL - MISFUELLING PREVENTION DEVICE
Playing it safe

With the increasing prices of repairing damaged fuel systems due to poor-quality fuel, Water Watch is a small insurance policy that provides peace of mind while on the road. Thank you to the staff for recommending the system I purchased, which is fit for purpose.

Lee Dunstan
04/08/2025
WATER WATCH KIT
WATER WATCH KIT
Diesel Fuel Additative

A good product that was promptly and efficiently delivered.

Gregory Jones
04/02/2025
RESPONSIVE FUEL ADDITIVE LUBRICANT & CONDITIONER TREATMENT
RESPONSIVE FUEL ADDITIVE LUBRICANT & CONDITIONER TREATMENT

Fantastic!

Michael T
02/14/2025
WATER WATCH BOWL
WATER WATCH BOWL
Incredible!

Sensor cable had failed at the end near the sensor. Replacement fixed the problem.

Adrian W
02/02/2025
WATER WATCH SENSOR
WATER WATCH SENSOR
Remarkable!

Change out due to being either the sensor or replay at fault.Put both in and problem solved.

Adrian W
02/02/2025
WATER WATCH RELAY - 12V
WATER WATCH RELAY - 12V

Highly recommended!

Richard K
01/15/2025
RESPONSIVE FUEL ADDITIVE LUBRICANT & CONDITIONER TREATMENT
RESPONSIVE FUEL ADDITIVE LUBRICANT & CONDITIONER TREATMENT
Wonderful!

Easy and fast

Justin A
01/02/2025
WATER WATCH ESSENTIAL TRAVEL KIT
WATER WATCH ESSENTIAL TRAVEL KIT

Terrific!

Stephen W
11/08/2024
RESPONSIVE FUEL ADDITIVE LUBRICANT & CONDITIONER TREATMENT
RESPONSIVE FUEL ADDITIVE LUBRICANT & CONDITIONER TREATMENT

Excellent product and consistently fast delivery!

Chrissy S
11/02/2024
RESPONSIVE FUEL ADDITIVE LUBRICANT & CONDITIONER TREATMENT
RESPONSIVE FUEL ADDITIVE LUBRICANT & CONDITIONER TREATMENT

Highly recommended!

Dave H
10/08/2024
RESPONSIVE FUEL ADDITIVE LUBRICANT & CONDITIONER TREATMENT
RESPONSIVE FUEL ADDITIVE LUBRICANT & CONDITIONER TREATMENT
Incredible!

Great service. In fact I’ve ordered two more water watch systems.

Eric E
09/30/2024
WATER WATCH BOWL
WATER WATCH BOWL
Excellent!

It works

Andrew K
09/20/2024
RESPONSIVE FUEL ADDITIVE LUBRICANT & CONDITIONER TREATMENT
RESPONSIVE FUEL ADDITIVE LUBRICANT & CONDITIONER TREATMENT
Fantastic!

Easy to use

Simon M
08/02/2024
RESPONSIVE FUEL ADDITIVE LUBRICANT & CONDITIONER TREATMENT
RESPONSIVE FUEL ADDITIVE LUBRICANT & CONDITIONER TREATMENT

Marvelous!

Scott G
07/21/2024
WATER WATCH SEAL KIT
WATER WATCH SEAL KIT
  • Frequently Asked Questions
  • About Us
  • Contact Information
  • Privacy Policy
  • Refund Policy
  • Shipping Policy
  • Terms of Service
  • Facebook
  • Instagram
  • YouTube
Payment methods
  • American Express
  • Apple Pay
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Union Pay
  • Visa
© 2025, Responsive Engineering Australia
  • Choosing a selection results in a full page refresh.
  • Opens in a new window.